Group T7D

11 questions from the official pool, drawn by ID — exact wording, never retyped.

T7D01 Which instrument would you use to measure electric potential?

A An ammeter B A voltmeter C A potentiometer D An ohmmeter

T7D02 How is a voltmeter connected to a component to measure applied voltage?

A In series B In parallel C In quadrature D In phase

T7D03 When configured to measure current, how is a multimeter connected to a component?

A In series B In parallel C In quadrature D In phase

T7D04 Which instrument is used to measure electric current?

A An ohmmeter B An electrometer C A voltmeter D An ammeter

T7D05 How does an ohmmeter measure the resistance of a circuit or component?

A By applying a small current and measuring the resulting voltage B By placing a variable resistor in parallel with the circuit C By placing a variable resistor in series with the circuit D By applying a variable voltage and measuring the resulting current change

T7D06 Which of the following can damage a multimeter?

A Attempting to measure resistance using the voltage setting B Failing to connect one of the probes to ground C Attempting to measure voltage when using the resistance setting D Not allowing it to warm up properly

T7D07 Which of the following measurements are made using a multimeter?

A Signal strength and noise B Impedance and reactance C Voltage and resistance D All these choices are correct

T7D08 Which of the following types of solder should not be used for radio and electronic applications?

A Acid-core solder B Lead-tin solder C Rosin-core solder D Tin-copper solder

T7D09 What is the characteristic appearance of a cold tin-lead solder joint?

A Dark black spots B A bright or shiny surface C A rough or lumpy surface D A greenish tinge

T7D10 What reading indicates that an ohmmeter is connected across a large, discharged capacitor?

A Increasing resistance with time B Decreasing resistance with time C Steady full-scale reading D Alternating between open and short circuit

T7D11 Which of the following precautions should be taken when measuring in-circuit resistance with an ohmmeter?

A Ensure that the applied voltages are correct B Ensure that the circuit is not powered C Ensure that the circuit is grounded D Ensure that the circuit is operating at the correct frequency